<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<link rel="stylesheet" href="./bootstrap-3.4.1-dist/css/bootstrap.min.css">
<body>
    <div class="container">
        <div class="form-group has-success has-feedback">
            <label class="control-label" for="inputSuccess2">Input with success</label>
            <input type="text" class="form-control " id="inputSuccess2" aria-describedby="inputSuccess2Status">
            <span class="glyphicon glyphicon-ok form-control-feedback" aria-hidden="true"></span>
            <span id="inputSuccess2Status" class="sr-only">(success)</span>
          </div>
          <div class="form-group has-warning has-feedback">
            <label class="control-label" for="inputWarning2">Input with warning</label>
            <input type="text" class="form-control" id="inputWarning2" aria-describedby="inputWarning2Status">
            <span class="glyphicon glyphicon-warning-sign form-control-feedback" aria-hidden="true"></span>
            <span id="inputWarning2Status" class="sr-only">(warning)</span>
          </div>
          <div class="form-group has-error has-feedback">
            <label class="control-label" for="inputError2">Input with error</label>
            <input type="text" class="form-control" id="inputError2" aria-describedby="inputError2Status">
            <span class="glyphicon glyphicon-remove form-control-feedback" aria-hidden="true"></span>
            <span id="inputError2Status" class="sr-only">(error)</span>
          </div>
          <div class="form-group has-success has-feedback">
            <label class="control-label" for="inputGroupSuccess1">Input group with success</label>
            <div class="input-group">
              <span class="input-group-addon">@</span>
              <input type="text" class="form-control" id="inputGroupSuccess1" aria-describedby="inputGroupSuccess1Status">
            </div>
            <span class="glyphicon glyphicon-ok form-control-feedback" aria-hidden="true"></span>
            <span id="inputGroupSuccess1Status" class="sr-only">(success)</span>
          </div>
    </div>
    <script src="./jquery-1.9.1.js"></script>
    <script src="./bootstrap-3.4.1-dist/js/bootstrap.min.js"></script>
</body>
</html>